package servlet;

import com.jspsmart.upload.File;
import com.jspsmart.upload.Files;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspFactory;
import javax.servlet.jsp.PageContext;
import java.io.IOException;
@WebServlet(urlPatterns = "/upload")
public class UploadServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req,resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        try {
            //创建上传链接对象
            SmartUpload smartUpload = new SmartUpload();
            //上传初始化操作
            JspFactory factory = JspFactory.getDefaultFactory();
            PageContext pageContext = factory.getPageContext(this, req, resp, null, false, 1024, true);
            smartUpload.initialize(pageContext);
            smartUpload.setCharset("utf-8");
            //上传
            smartUpload.upload();

            //获取上传文件信息
            File file = smartUpload.getFiles().getFile(0);
            String fileName = file.getFileName();
            String contentType = file.getContentType();
            //指定上传路径
            String url = "/uploadfiles/"+fileName;
            //指定保存位置
            file.saveAs(url,File.SAVEAS_VIRTUAL);
            //跳转
            req.setAttribute("filename",fileName);
            req.getRequestDispatcher("success.jsp").forward(req,resp);

        } catch (SmartUploadException e) {
            e.printStackTrace();
        }

    }
}
